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Please explain fully.
In a sample of 64 patients, suppose that 47 showed allergic reduced reaction and 17 show increased reaction. Are these results sufficient to conclude a significant effect? Assume that increasing and decreasing reactions are equally likely if the training had no effect. Use alpha .05
gender difference in dream content female low medium high
18 4 2
male 4 17 15
Is there a relationship between gender and the aggression content of dreams? Test with alpha .01
The city of Oakdale wishes to see if there is a linear relationship between the temperature and the amount of electricity used (in kilowatts).
An election coming up next week promises to be very close. In fact, assume that 50% are in favor and 50% are against. Suppose you conduct a poll of 791 randomly selected likey votes. Approx. how different will the percent in favor (from the poll) ..
The mean difference in total cholesterol levels (after - before) was 27.138 mg/dL with a standard deviation of 7.3685 mg/dL. Create a 95% confidence interval for the true average difference in cholesterol levels by the drug.
A property of concern for any food company that uses a high-speed carton-filling machine to package juice is the weight of the food product in the individual cartons.
Make up a scatter diagram with 10 dots for each of the following situations:
the null hypothesis is to be tested at 95% confidence. Determine the critical value(s) for this test.
What are the advantages of ANOVA over the mean test and what are the disadvantages? Where would I use this in my everyday life?
Students in the social work course received the following course grades. Create a frequency distribution for this data. Compute the mean. Determine the median.
Your firm has classified orders as either large or small in dollar amount and as either light or heavy in shipping weight. In the recent past, 28% of orders have been large dollar amounts
Is the school district correct in assuming the girls are equal in performance to boys. They are 95% sure their assumption is correct.
A random sample of 100 peaches is gathered and the mean diameter is calculated. What is the probability that the sample mean is greater than 3.79 inches.
The article claims that the distributions of annual returns for both common stocks and long-term government bonds are bell-shaped and approximately symmetric. Assume that these distributions are distributed as normal random variables with the mea..
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